205022136 has 32 divisors (see below), whose sum is σ = 559152000. Its totient is φ = 62127840.

The previous prime is 205022119. The next prime is 205022137. The reversal of 205022136 is 631220502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205022137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388036 + ... + 388563.

It is an arithmetic number, because the mean of its divisors is an integer number (17473500).

Almost surely, 2^205022136 is an apocalyptic number.

It is an amenable number.

205022136 is an abundant number, since it is smaller than the sum of its proper divisors (354129864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205022136 is a wasteful number, since it uses less digits than its factorization.

205022136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776619 (or 776615 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 205022136 is about 14318.5940650610. The cubic root of 205022136 is about 589.6580763249.

Adding to 205022136 its reverse (631220502), we get a palindrome (836242638).

The spelling of 205022136 in words is "two hundred five million, twenty-two thousand, one hundred thirty-six".